Thanks for posting this. I have experienced similar. I have found that nasty bug reports are most effective. Good data, and the people are too cheesed off/embarrassed, to follow up, after you address it. Occasionally, it can actually be turned around, and they can become evangelists.
I have integrated a simple feedback form into the app, with the option to send anonymously. That seems to help.
> had I known I'd get 10K views and 100 comments
Is that still the case, after being frontpaged on HN (but most comments are probably here)?